How to bind:Matching frequency method:
1. Select D8 mode on Frsky remote control. Hold the bind key on Frsky-Nano receiver and connect the battery, then the receiver's red light will be always on.
2. Select the BIND mode on remote control , the Frsky-Nano receiver's blue light will flash slowly and the red light will be always on which means bind complete.
3.Enter: set sbus_inversion = off (set serialrx_inverted = on if your FC is BF3.3 or newer)on BF CLI and save.
4. Repower the Frsky-
Nano receiver . The red light on it will flash very quickly which means it receives the singal from remote control